just want to know, did Titan use back ur original spring or they give their spring?
AFAIK, if u want more comfort n handling better then OEM they will install their absorber n tune it to match the spring rate from ur original spring.. if its too bumpy then something wrong with ur ori spring.. if they change it to other spring then u never get back the comfortable u searching..
did they test ur car before they tune it?

as for me, i also ex-Titan user.. i ask them i want street setup (proton wira), after they finish install i thought the rear side its a bit high to my likeness, but they ask try 1st.. i try it for 2-3 months still i dont like it.. then i just ask my mech to lowered it to my like.. then after that i really confident to attack corner as fast as i want..

yup.. that could be the reason.. most of car that want comfortable ride (especially rare or expensive car), Titan use back their spring.. they will compress the spring whatsoever to combine with their absorber..

maybe.. i think u need to ask them properly what is the problem..

r u sure stock spring is stiffer then lowered spring? i thought other way around..

i remember last time they had kancil as their demo car.. my friend's car cant follow the kancil in winding road while we were following behind..

Should be lesser finger will lower ur ride thus lower the center of gravity

maybe not for all cars..
common cars like proton n perodua still performing well with Titan.. i had Titan installed in wira a few years back, its one of my mod that change the car completely.. ask them for street setup, which i use it for daily no problem.. still comfort and performing well in trackdays..
but at 1st they set rear height kinda high to my liking.. so i just ask my mechanic to lowered a bit by a few centimeter.. before adjust front is 1 finger gap n rear is 2 finger gap, adjust it to 1/2 maybe less finger gap for rear..

But i felt new myvi suspension is seriously bumpy compare 1st gen myvi.. Both i did use it while its new..
So i think not all car is comfort when its new, another example is all new mazda car with skayactiv.. Quite bumpy compare in its class..

Wait, which model r u using?
I try a lot of time using CX-5, can't get more then 180km/h but mostly because of traffic..

Hehe.. U try hard suspension setup + SR3 leather wrap, seriously not comfortable at all..
Most semi or full bucket using fabric which absorb sweat..

Last time i did use recaro enjoy fabric with street tune adjustable is the best of all setup for daily..